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Patrick T. Brown Profile picture
@PatrickTBrown31
Sep 25, 2019 • 3 tweets • 3 min read • Read on X
Air parcels tend to flow along surfaces of constant potential temperature (isentropes). #SJSU #METR171a #SynopticMeteorology
Warm air advection is associated with air parcels ascending upsloping isentropes. This is associated with adiabatic cooling, condensation and precipitation. #SJSU #METR171a #SynopticMeteorology
Cold air advection is associated with air parcels descending downsloping isentropes. This is associated with adiabatic warming and fair weather. #SJSU #METR171a #SynopticMeteorology

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More from @PatrickTBrown31

Patrick T. Brown Profile picture
Jun 25
Is climate change driving massive increases in severe thunderstorm costs and causing “The Possible Collapse of the U.S. Home Insurance System” as @nytimes reports?

There is a large and growing gap between climate science and the reporting coming from 'climate desks'…🧵 Image
It is true that both US billion-dollar disasters and global insured disaster losses are increasing, and a large fraction of the overall increase seems to be driven by increases in losses from severe thunderstorms.

ncei.noaa.gov/access/billion…
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But what, specifically, does climate science say about historical and expected changes in severe thunderstorms and their associated hazards of tornadoes and hail?
Read 25 tweets
Patrick T. Brown Profile picture
May 6
Flooding is now often reported on as proof of a new era of climate-related catastrophes. But is this correct?

liberalpatriot.com/p/are-floods-d…



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When considering the risk of natural disasters like floods, the UN’s Intergovernmental Panel on Climate Change (IPCC) has adopted a useful framework for breaking down the risk of impacts.
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This is useful for considering the underlying causes of any changes in flood disasters because, on the many-decade timescales that climate change progresses, there will not only be changes in the hazard but also changes in exposure and vulnerability.
Read 18 tweets
Patrick T. Brown Profile picture
Feb 27
I have a piece out today in The Chronicle of Higher Education on how social and career incentives surrounding researchers cause a good portion of the full story on the climate problem to be left out of the high-impact literature. 🧵
chronicle.com/article/does-c…
I also recently gave a seminar for the Energy Policy and Climate Program at Johns Hopkins University (where I am a lecturer) that covers the same topic:
This piece stems from a frustration I feel about not being able to take the high-impact climate science literature at face value. Image
Read 17 tweets
Patrick T. Brown Profile picture
Oct 20, 2023
Even if temperatures return to the middle of the climate model projection envelope by the late 2020s, we still expect temperatures like those seen in 2023 to be commonplace in the 2030s...



🧵
Thus, any drastic change in weather at the regional level (like in the US) associated with this level of global warmth would be quite concerning when considering climate impacts over the coming decades.
On that front, The New York Times purported to connect the recent spike in global temperatures to a summer of unusually devastating weather in the US in a piece called Why Summers May Never Be the Same. The globe’s warmest months on record redefined summer for many Americans. Image
Read 24 tweets
Patrick T. Brown Profile picture
Sep 5, 2023
Last week, I described our paper on climate change and wildfires:



I am very proud of this research overall. But I want to talk about how molding research presentations for high-profile journals can reduce its usefulness & actually mislead the public.
For climate research, I think the crux of the issue is highlighted here in my thread:

I mentioned that this research looked at the effect of warming in isolation but that warming is just one of many important influences on wildfires with others being changes in human ignition patterns and changes in vegetation/fuels.
Read 32 tweets
Patrick T. Brown Profile picture
Aug 30, 2023
We have a paper out today in @Nature on the role that human-caused climate change is playing in changes in extreme wildfire behavior, at the daily timescale, in California.

nature.com/articles/s4158…
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Many previous studies have looked at the influence of climate change on wildfires in California, the US West, and around the world. However, most previous studies have focused on *conditions conducive* to wildfires rather than characteristics of wildfires themselves.
This is exemplified by the relevant statement in the latest Intergovernmental Panel on Climate Change (IPCC) report, which is an assertion about weather conditions conducive to wildfires. Image
Read 25 tweets

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